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问题1: 逆变器出现故障是，售后流程是什么？
问题2: 如何了解机器的运行状态？
问题3: 禧龙的产品获得了哪些认证？
问题4: 禧龙控制器的质保期是多长时间？
问题5: 购买的控制器如何正确安装？
问题6: 禧龙控制器的序列号在哪里？
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